Mechanical clutch



May 30, 1933. P BISCHQF 1,911,789

MECHANICAL 'CLUTCH Filed Oct. 16, 1950 Paul zchof latented May 30, 1933 UNITED STATES PATENT FFICEv PAUL BIscHor, F NEW YORK, N. Y.

MECHANICAL CLUTCH Application led October 16, 1930. Serial No. 489,020.

The main obj ect of this invention is to The projecting ends of the studs 29 are pivoprovide a transmission clutch for auto-motive tally secured to levers 30 which latter rest on vehicles which is capable of slow and gradlugs 31 of the base plate intermediate their Y ual engagement with the drive shaft of the length. The free ends of the levers are supb transmission. ported on coil springs 32 and ride upon one 55 Another object is to provide a transmission side of a shoulder plate 33 which is mounted clutch which is inexpensive in cost o-f manuslidably on the driven shaft 13. facture of a minimum number of parts and A foot pedal 34 is pivotally mounted above fool-proof and sure in operation. the floor board (not shown) of the vehicle d'3 The above and other objects will become and is connected to a fulcrummed lever 35 60 apparent in the description below in which through the medium of a connecting bar 36.

characters of reference refer tolike-named In use, the device is adapted to uncouple parts in the drawing. the driven shaft from the drive shaft when Referring briefly to the drawing, Figure 1 required so that the vehicle of which the deis a longitudinal sectional elevational view vice forms a part may be halted. By urging through the clutch in disengaged position. the foot pedal 34 forwardly, the shoulder Figure 2 is a fragmentary front elevaplate 35 is slid along the driven shaft toward tional view of the same. the fly-wheel 11 of the device. The levers Figure 3 is a front elevational vlew of 30 which have their ends connected to the j the grip shoe. studs 29 will lift the circular shoe 26 away o Referring in detail to the drawing, the from the ring 14 thereby releasing the sernumeral indicates the motor drive shaft rations on both of these members from muwhich has secured to its end a dished-out flytual engagement. The ring 19 is then lifted wheel 11. The fly-wheel is secured to the from the face of the disk 14 thereby comshaft 10 by bolts 12. A driven shaft 13 is pletely uncoupling the clutch. By releasing 75 mounted co-axial with the Vdrive shaft and the foot pedal the stated members are urged has a disc 14 slidably mounted on the driven into engaged position by the springs 20 and Y shaft and is rotatable with the latter. The 32. v

disc is provided with flat parallel faces 15 It is to be noted that certain changes in I j and 16, the former of which is adapted to form and construction may be made without 8O* engage the face surface 17 of the fly-wheel departing from the spirit andvscope of the 11. The face 16 of the disk 14 is normally invention. in contact with the flat friction grip surface I claim:

1,- 18 of a ring 19. Said ring is normally urged In a device of the class described, a drive d into contact with the disk by springs 20 arshaft having a fly wheel thereon, a driven ranged around the ring 19 and which have shaft having a disk thereon normally in fricone end housed in provided cups 21 of a base tional contact with the fly wheel, said disk plate 22 which is rigidly secured to the fly having raised pointed serrations thereon, a

l wheel 11 and provided with oppositely-disfioating ring housed in said ily wheel, said posed fixed collars 23 and 24. ring having an annular channel therein, an

The ring 19 is provided with an annular annular serrated shoe movable in said chanchannel 25 in which is received a grip shoe nel normally engaging said disk, and means 26 which has its underside provided with on said shoe for retracting said shoe to release serrations- 27 engageable with complemental the clutch.

slerrations 28 firmed on thehsurface 16 of In testimony whereofI affix my signature. 95

tie ring 14. he circular s oe 26 is pro vided with a plurality of studs 29 which pass PAUL BISCHOF' through suitable openings in the ring 19 and through openings in the base plate and normally project somewhat above the latter. 1U? 

